It appears that stuffed meatballs are becoming a little mini trend. I've seen them pop up on my Twitter feed a few times in the past month, whether filled with oozy mozzarella cheese, basil pesto or meatloaf-sized and stuffed with cooked spaghetti. That last iteration is a little overboard, even for me, but I am very interested in the cheese-stuffed variety, especially since I tasted them at Little Nonna's in Philadelphia a few weeks ago. It also helps that I'm pretty sure Little Nonna's incredible meatballs are not only stuffed with melted cheese, but also tasted-- and I could be wrong-- like they were maybe deep-fried. Incredible...like meaty arancini.